First and foremost, there is no such thing as a 'world wide licence'.
Any licence issued by the regulatory body of that particular country is only valid for that particular country alone.
Conversions are normally done due to a recognized standard/s and done on reciprocal basis; ie if you accept my licence, I accept yours too. Of course there would be the usual mandatory audit by the regulatory body to establish this.
Most countries 'Part 66' standard/syllabus are based on the EASA-66 syllabus with some variation levels in adoptions and adaptations to suit the country's Law of the Land. This is the same with our Part 66 AML.
It is up to another country to recognise and accept any particular country's law and licence as 'compatible' and acceptable, based on their perceptions of standards, safety and official audits.
Previously DCAM's BCAR Section L LWTR was recognized and accepted in Singapore, Brunei, Australia, New Zealand, Hong Kong and the Middle Easts. With our new Part 66 AML syllabus there should be no reasons this existing status would be changed as these countries too has adopted and have their version of Part-66, hence a wider acceptance of our licence is anticipated.